The 300 Phoenix is a proprietary cartridge developed by G. McMillan & Co. of Phoenix, Arizona, USA, in 1991. This cartridge is based on the 416 Rigby case necked down to 308 caliber.
300 PHOENIX
The 300 Phoenix is a proprietary cartridge developed by G. McMillan & Co. of Phoenix, Arizona, USA, in 1991. This cartridge is based on the 416 Rigby case necked down to 308 caliber.